# DC Circuits

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| By Prodale270
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Prodale270
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Quizzes Created: 1 | Total Attempts: 1,902
Questions: 5 | Attempts: 1,902

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A quiz about dc circuits :D
just 5 Qns to test your understanding :D
pictures are all drawn by myself on paint :D

• 1.

### There is a circuit with an emf source of 6.0V connected to a lamp and a current flow of 2.0A.Assuming that the wires connecting the whole circuit is resistance free, what is the resistence of the lamp?

• A.

• B.

2.0Ω

• C.

3.0Ω

• D.

6.0Ω

C. 3.0Ω
Explanation
V=IR
R=V/I
R=6.0/2.0
R=3.0Ω

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• 2.

### What is the effective resistance of the circuit?

• A.

12Ω

• B.

(11/3 )Ω

• C.

• D.

C. 1Ω
Explanation
1/total resistance (parallel)= 1/r + 1/r + 1/r (r being the respective resistance)
in this case
1/effective resistance= 1/6 + 1/3 + 1/2
effective resistance = 1Ω

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• 3.

### What is the total current of the circuit?

• A.

12.0A

• B.

6.0A

• C.

11.0A

• D.

0A

A. 12.0A
Explanation
I=VR
Total current= total of 3 currents for each branch of a parallel circuit
total current= 12/2 + 12/3 +12/6
= 12.0A

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• 4.

### What is the maximum possible voltage and current through the circuit?

• A.

6.0V,0.24A

• B.

0V,0.24A

• C.

0V,0.48A

• D.

6.0V,0.48A

A. 6.0V,0.24A
Explanation
I=V/R
=6/25
=0.24A
v=IR
=0.24X25
=6.0V

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• 5.

### What is the P.D of each resistor?

• A.

24A,48A

• B.

24V,48V

• C.

4V,8V

• D.

4A,8A

C. 4V,8V
Explanation
P.d(1)=(24/[24+48])12
=4V

P.d(2)=(48/[24+48])12
=8V

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• Current Version
• Mar 03, 2023
Quiz Edited by
ProProfs Editorial Team
• Apr 06, 2010
Quiz Created by
Prodale270

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