What is the voltage across a 220 ohm resistor if the current through it is 5.6 m

Question

What is the voltage across a 220 ohm resistor if the current through it is 5.6 mA? What is the current through a 2.2 k ohm resistor if the voltage drop across it is 24 V? How much resistance is required to limit the current to 1.5 mA if the potential drop across the resistor is 24 V? At starting, what is the current drain on a 12 V car battery it the resistance of the starting motor is 40 m ohm? If the current through a 100 k ohm resistor is 3.6 mu A, what is the voltage drop across the resistor? If a voltmeter has an internal resistance of 50 k ohm, find the current through the meter when it reads 120 V. If a refrigerator draws 2.2 A at 120 V. what is its resistance? If a clock has an internal resistance of 8 k ohm. find the current through the clock if it is plugged into a 120 V outlet. A washing machine is rated at 4.2 A at 120 V. What is its internal resistance? A CD player draws 80 mA when 4.5 V is applied. What is the internal resistance? The input current to a transistor is 20 mu A. If the applied (input) voltage is 24 mV. determine the input resistance of the transistor. The internal resistance of a dc generator is 0.5 ohm. Determine the loss in terminal voltage across this internal resistance if the current is 12 A. a. If an electric heater draws 9.5 A when connected to a 120 V supply, what is the internal resistance of the heater? b. Using the basic relationships of Chapter 2, determine how much energy in joules (J) is converted if the heater is used for 2 h during the day.

Explanation / Answer

3)

From ohm's law

V=i*R

R=V/i

=24 V/(1.5*10^-3 A)

=16000 ohms

=16 kilo ohms

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