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This is an MCQ-based quiz on the topic of ELECTRICITY: Ohms law.
This set of MCQs helps you brush up on the important physics topics and prepare you to dive into skill practice and expand your knowledge.
How much energy in joule is expended in moving a 50 C charge through a potential difference of 3V ?
16.7
150
0.06
53
Calculate the resistance of an aluminium wire of length 25m and diameter 10 mm. ( Given ρal = 0.0283 μΩm)
6
0.6
9
0.9
The resistance of a length of aluminium wire is 10 Ω at 20oC. Find the resistance if it is cooled to 0oC. (α20 = 0.00403 /oC)
9.194
10.98
11
0
A current of 4 A is passed through a 500 Ω resistor for 20 hours. Determined the energy consumed in MJ.
0.16
576
144
72000
When a current of 10.0 A flows through a 50.0-Ω resistor in a circuit, what is the voltage of that circuit?
500
5
0.2
60
A 9-V battery is hooked up to a 3-Ω resistor. What current is flowing through this circuit in A?
12
0.3
27
3
Which type of device is installed in bathrooms where electrical appliances are often used near a water source?
Fuse
Residual Current Device
Diode
Circuit breaker
Some electronic devices, such as computers, retain some _____ even when they are unplugged, so you should not attempt to repair them yourself.
Current
Resistance
Voltage
Charge
Which is the correct statement of Ohm's Law?
R = VI
V = RI
V = R/I
I = R/V
Most home refrigerators are connected to a 30 _____ breaker in a breaker box, which will be triggered if excess _____ flows through the breaker.
Amp, current
Amp, voltage
Volt, current
Volt, voltage
