What is the resistance of a resistor if the current going through it is and the voltage across it it is ?

is composted of two resistors in parallel, and

is a single resistor.

In the circuit above, what is the current?

If the current through a resistor is , what is the voltage across the resistor?

Consider the circuit:

If each resistor has a value of , how much current is flowing through the circuit?

A light bulb requires 60 W to function properly. If it is connected to a powersupply of 120 A and functions properly, then what is the resitance of the light bulb?

A circuit has a power source and a resistance. What is the current in the circuit?

A student assembles a circuit with a resistor and a voltage source. He realizes that he needs to increase the amount of electrons flowing through the circuit to reach his goal. What can the student do to achieve this?

I. Change the voltage source to an alternating source

II. Use a new voltage source with higher voltage

III. Use another resistor with lower resistance

If a closed circuit connected to a battery has a resistance of , what is the current flowing through this circuit?

A battery has an internal resistance of . If the current within the battery were to be measured using a multimeter, what magnitude would the meter record?

Consider the circuit diagram shown. In this circuit, the values of , , and are known, but the value of is variable.

Which of the following expressions would give a situation in which the voltmeter in the diagram would read zero?