Name the device used to protect the electric circuits from overloading and short circuits. On what effect of current does it work?

Q: How is the movement of electricity through air different from is movement through a copper wire?

A: When no current flows through a piece of copper, the free electrons are moving rapidly about. Their…

Q: Why are two wires used to carry electric current instead of a single one? Explain in not less than 3…

A: Given For electric current to pass we use two wires We have to find the answer, why do we not use…

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: As shown in the figure, calculate the magnetic field that will be formed at the point A of the…

A: given: radius, r =  5 cm  current, i = 10 A

Q: why the electric wire that is connecting in the post outside a little bit saggy and not tightly tied…

A: Question : Why the electric wire that is connecting in the post outside a little bit saggy and not…

Q: Why are two wires used to carry electric current instead of a single one? Explain in not less than…

A: The answer is below

Q: What are three ways in which voltage can be induced in a wire?

A: According to the Faradays law, inducing a voltage into a conductor can be done by either passing it…

Q: Which of the following accurately depicts charging by induction?

A: Induction charging is a method used to charge an object without actually touching the object with…

Q: What energy conversion does take place during the working of a dc current?

A: The conversion of electric energy into mechanical energy is done by DC motors whereas AC generators…

Q: Which of the following is unit for magnetic field: Select one: Weber O Ampere O Tesla

A:

Q: A magician places an aluminum ring on a table with a hidden electromagnet underneath. When the…

A:

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

A: Battery

Q: What is the purpose of switch in a current?

A: Electric switch is a device that interrupts the electron flow in a circuit. It is an electrical…

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: How often is current reversed in the loops of an electric motor?

A: Explanation:

Q: What are the Properties of Alternating Current?

A: The properties of alternating current are: Frequency is denoted by f and is defined as the number…

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 happens if you change the direction of the current in a wire?

A: The current-carrying wire always produces magnetic fields throughout it. The direction of the…

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: What is the advantage of transmitting power at high voltages?

A:

Q: . If an electric circuit could be compared to a water ircuit at a water park, then the current would…

A: 1) current : charge per unit time is called current current = i =qt

Q: What is that current going into any point in a dc circuit is the same as the current going out?…

A: It is Kirchoff 's  first law . According to - Kirchoff 's  1st law - sum of current entering at…

Q: Is electric current possible without a potential difference?

A: No, it is not possible.

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: Why does a wire that carries electric current becomes hot?

A: The heating effect in a wire due to electric current is a consequence of Joule’s law of…

Q: Under what conditions would increasing a voltage have no effect on the current moving through a…

A: The relation between the voltage , resistance and current is given by Ohm's law as follows:V = IR…

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: A loop of wire is placed in a magnetic field as shown. Which of the following would induce a…

A: Explanation: Electromagnetic induction: The electromagnetic induction is the phenomenon of the…

Q: Which is more likely to interfere with compass readings, AC current in your refrigerator or DC…

A: The direction of AC current changes with a specific time interval. Hence, the compass needle will…

Q: What causes the rotation in electric motors?

A: Rotation in motor is due to torque and torque is due to magnetic force.  Magnetic force is given by,…

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

Q: A short piece of metal that melts when a large current passes through it is a: O circuit breaker O…

A: