Calculate the quantity of charge moved by the current during this time?

- 2.6 C
- 3.6 C
- 4.6 C
- 4.0 C

Explanation: Charge

Question 2: An battery is used to ..................

- not to maintain a potential difference.
- maintain a potential difference.
- maintain a potential velocity.
- keep the mass the same.

Question 3: Assume a resistor R is connected across a battery of negligible internal resistance.

If the resistance of R is halved, the current in R would be..................

- halfed.
- doubled.
- zero.
- the same as before.

Explanation: We know that current

Question 4: Let's consider a 9-V battery in a simple circuit generating a current of 2A through the circuit.

Calculate the power being delivered by the battery.

- 0 watt
- 9 watts
- 8 watts
- 18 watts

Explanation:

Power

Question 5: In the circuit shown below, which device is used to measure the electric current in the circuit?

- 1
- 2
- 3
- none

Question 6: Assume that a student would like to measure the voltage across one of the resistors in the circuit shown above (question 5),

the student would connect a voltmeter ..........................the resistor.

- in parallel with
- in perpendicular with
- opposite to
- in any position with

Question 7: The resistance of a circuit element is a measure of ................

- the amount of work that an electron can perform.
- the ratio of the voltage difference between element ends to the current in the element.
- energy
- power

Question 8: Consider a circuit where the voltage drop across a resistor is 8.0 V for a current of 2.0 A in the resistor.

Calculate the current that will generate a voltage drop of 4.0 V across the resistor.

- 1 A
- 2 A
- 3 A
- 0 A

Explanation: We know that current

Question 9: Ohm's law tells us that the amount of current generated in a circuit is..........................

- directly proportional to resistance.
- directly proportional to voltage.
- directly proportional to current.
- inversely proportional to voltage.

Explanation: We know that current

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Date of last modification: Summer , 2019