Draw a circuit diagram for the case where both resistors (1000 ohms and 100 ohms) and an LED are connected in series and parallel. Taking the internal resistance of a single LED as 20 Ω, calculate the total current in the series and parallel circuits drawn. Then calculate the power, P (P = IV ), going through the LED in each of these cases. The battery is 3V.

Draw a circuit diagram for the case where both resistors (1000 ohms and 100 ohms) and an LED are connected in series and parallel. Taking the internal resistance of a single LED as 20 Ω, calculate the total current in the series and parallel circuits drawn. Then calculate the power, P (P = IV ), going through the LED in each of these cases. The battery is 3V.

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter22: Electric Current

Section: Chapter Questions

Problem 66A

See similar textbooks

Similar questions

Consider the circuit shown below. The terminal voltages of the batteries are shown, (a) Find the equivalent resistance of the circuit and the current out of the battery, (b) Find the current through each resistor, (c) Find the potential drop across each resistor, (d) Find the power dissipated by each resistor, (e) Find the total power supplied by the batteries.
Resistors are commonly rated at 18W,14W,12W ,1 W and 2 W for use in electrical circuits. If a current of1 = 2.00 A is accidentally passed through a R=1.00 resistor rated at 1 W, what would be the most probable outcome? Is there anything that can be done to prevent such an accident?
A 160F capacitor charged to 450 V is dischargedthrough a 31.2k resistor, (a) Find the time constant.(b)Calculate the temperature increase of the resistor, given that its mass is 2.50 g and its specific heat is 1.67kJ/kg °C,noting that most of the thermal energy is retained in the short time of the discharge, (c) Calculate the new resistance, assuming it is pure carbon. (d) Does this change in resistance seem significant?
The diagram represents an electric circuit consisting of a 12-volt battery, a 3.0-ohm resistor, R1, and a variable resistor, R2. At what value must the variable resistor be set to produce a current of 2.0 A through R1?
A circuit contains a 10.0 ohm resistor, a 12.0 ohm resistor, and a 6.0 ohm resistor. If they're connected in parallel with a 12V battery, calculate the current through the 10.0 ohm resistor?
What voltage will produce 0.2 AA of current through a 4800-ΩΩ resistor? Express your answer to two significant figures and include the appropriate units. V=
The figure shows an LED, protected by a resistor R, which is powered by a 9 Volt battery. If the power of the LED is 70 milliwatts and the voltage drop across the LED is 3.5 volts, determine the value of the resistor R in ohms that should be used in the circuit.
In the circuit shown, two identical 1.5 V batteries (with the positive or high potential ends colored orange) are connected to three identical bulbs, A, B, and C. The current in bulb A is I0.A. What is the current in bulb B? Express your answer as a number multiplied by I0, and enter that number here: _____ × I0B. What is the current in bulb C? Express your answer as a number multiplied by I0, and enter that number here: _____× I0Suppose that each of the bulbs has a resistance of 50 Ω.C. Calculate I0, the current in bulb A.I0 = _______ amps
1. Calculate the resistance of a resistor that has a voltage (potential difference) of 8 V across itwhen a current of 2 A flows through it. Draw the circuit diagram before doing the calculation. 2. Two 10 kΩ resistors are connected in series. Calculate the equivalent resistance. Draw the circuitdiagram before doing the calculation.
If a voltmeter that is ideal is connected to measure the voltage across the 83.0-kΩ resistor, what is its reading? Enter the absolute value of the reading. (in image, x = 8.20 V)
The formula for the power output P of a battery is P=VI−RI2P=VI−RI2, where V is the electromotive force in volts, R is the resistance in ohms, and I is the current in amperes. Find the current that corresponds to a maximum value of P in a battery for which V = 12 volts and R = 0.8 ohm. Assume that a 10-ampere fuse bounds the output in the interval 0≤I≤100≤I≤15
What is the minimum number of 63 −Ω resistors that must be connected in parallel to produce an equivalent resistance of 8.2 Ω or less?