Electronics - Ohm's Law

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"Everything should be made as simple as possible, but not simpler."
- Albert Einstein

"Half-splitting" is

A. a means for nuclear fuel cells to produce electricity
B. a means of isolating a problem in a circuit
C. a means for reducing a high ac voltage to a low dc voltage
D. a means of limiting current in a circuit


If doubling the voltage across a resistor doubles the current through the resistor then

A. the resistor value decreased
B. the resistor value did not change
C. the resistor value increased
D. it is impossible to determine the change in the resistor value


If the voltage across a fixed value of resistance is increased five times, what does the current do?

A. It increases by a factor of five.
B. It decreases by a factor of five.
C. It stays the same.
D. Not enough information


If the resistance in a circuit with constant voltage increases, the current will

A. increase
B. decrease
C. stay the same
D. Not enough information


What is the power in the given circuit?

A. 3.6 W
B. 35 W
C. 175 W
D. 245 W

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