Choose the BEST answer to the following: To receive an electric shock there must be a (a) current in one direction. (b) presence of moisture. (c) high voltage and low body resistance. (d) voltage difference across part or all of your body.

Q: Which among the following is not a base unit? O a. Ampere O b. Kelvin Oc. Candela Od. Newton

A: Which among the following is not a base unit ? (a) Ampere   (b) Kelvin  (c) Candela  (d) Newton

Q: Why does the filament of a lightbulb glow while the connecting wires do not?

A: The filament of a bulb is made of a metal with quite high resistance high melting point like…

Q: Why does the V/I ratio of an electric circuit indicate its ability to oppose electric current rather…

A:

Q: When electric current is passed, electrons move from

A: When electric current is passed, electrons move from

Q: What does it mean that it is a parallel circuit?

A:

Q: Which of the lightbulbs, the 25-W bulb or the 60-W bulb , has the higher resistance? Which draws…

A: The power used in lightbulbs is calculated by using the formula P=VI=V2R=Et  , where V is the…

Q: Current moving through a wire will result in_? Protons moving the opposite direction A magnetic…

A: Current moving through a wire will results in magnetic field induced around the wire.

Q: A flashlight uses batteries that add up to 4.5 V and has a power output of 0.47 W.

A: Given :: Voltage, V = 4.5 V Output, P = 0.47 W

Q: Why Is Tungsten Metal Used In Bulbs But Not In Fuse Wires?

A: The following properties of tungsten are desirable for the filament of electric bulb: High Melting…

Q: What is the nature of relationship between force and current?

A: Force is something which is experienced by an object or group of objects exerted by other. Current…

Q: Which of the following causes electrons in a wire to move as an electric current?

A: a) magnetic force between off switches

Q: Does it matter in which direction you assume the current flows when applying Kirchhoff's laws to a…

A: The answer is below

Q: What is the general name of the substances having infinitely high electrical resistance?

A: For insulator, the value of resistance is very high.

Q: Electric current that flows in one direction usually includes which of the following?

A: Battery

Q: A coulomb is the same as; O Ampere.second O Ampere.second^2 O Ampere/second O Ampere/second^2

A:

Q: It is an electronic device that transforms an alternating current into direct current.

A: A Rectifier is a device that converts alternating current into direct current. The Rectifier is made…

Q: Your friend says that according to Ohm’s law, high voltage produces high current. Then your friend…

A: According to ohm’s law, at a constant temperature, V is proportional to I, where R is the…

Q: A coil of wire is connected to a voltmeter. A bar magnet is quickly inserted into the coil of wire…

A: An emf induces in the coil if it is placed in the changing magnetic field or if it is moving then…

Q: Which of the following would create an electrical current? (Most power plants use something like…

A: Introduction: Electric current is produced due to the movement of electric charged particles like…

Q: What is a galvanometer called when it has been calibrated to read current? When it has been…

A:

Q: As charges move in a closed loop, they

A:

Q: How much power is there in an electrical circuit of 5.73 Volts and carrying 56.9 Amps of current?

A: Answer :- Given :-  V = 5.73 V I = 56.9 Amp P =?  We know that              P =  V × I Where P is…

Q: Why are copper and aluminium wires usually employed for electricity transmission?

A:

Q: What is the purpose of a switch?

A: Switch is an electrical component by which we can physically connect or disconnect the conducting…

Q: When does an electric short circuit occur?

A: A common kind of short circuit happens when a battery's positive and negative terminals are attached…

Q: What is the total power used by a 4.5-A electric iron, a 0.9-A fan, and a 2.4-A refrigerator motor…

A: Given value--- i1 = 4.5 Amp. i2 = 0.9 Amp. i3 = 2.4 Amp. V = 120 V. We have to find--- total…

Q: What causes electric shock - current or voltage?

A:

Q: What is created when a current flows through a wire?

A: Electric current flows

Q: Name the device used to protect the electric circuits from overloading and short circuits. On what…

A: In order to protect an electric circuit from excessive electric current, fuse is an electrical…

Q: Indicate which of the following will produce a magneticfield:(a) A magnet.(b) The Earth.(c) An…

A: a)Magnet-As the name suggests magnets produce Magnetic field lines of force from end to end. b)The…

Q: Should the voltmeter be connected in series or parallel with lamp in order to measure the voltage?…

A: The voltmeter should be connected in parallel in order to measure the voltage. A voltmeter is…

Q: Why are thick wires rather than thin wires usually used to carry large currents?

A: The resistance of the wire is inversely proportional to the cross section area of the wire i.e. it…

Q: What is the nature of current transmitted from a power station?

A: The nature of current transmitted from a power station is alternating current.

Q: How does a galvanometer detect electric current?

A: A galvanometer works on the theory that when momentary current is passed through a coil attached to…

Q: Which unit, Ampere (A)or Coulomb(C), is more fundamental and why?

A:

Q: As more lanes are added to toll booths, the resistance to vehicles passing through is reduced. How…

A: Given:  Parallel circuit.

Q: Why does the light come on so quickly when switch is thrown?

A:

Q: The power rating of a particular instrument is 675 W when connected to a constant voltage source of…

A:

Q: why the ammeter moves as the copper wire is placed in and out of the magnet?

A: SOlution: To discuss why there is current when the magnet moves in and out of the copper wire