PHYSICS

JAMB 2010 - Question 37

Physics 2010 JAMB Past Questions - Question 37: Three 4Ω resistors connected in parallel have a potential difference of 16 V applied across them .What is total current in the circuit ?

Choose the correct answers from the options given.
Three 4Ω resistors connected in parallel have a potential difference of 16 V applied across them .What is total current in the circuit ?
A:
B:
C:
D:
Examkits App

Examkit's JAMB CBT App

Practice JAMB offline with our Online, PC and Mobile App

  • ✅ 25+ years of past questions (2000 to 2025)
  • ✅ Video solutions and explanation to questions
  • ✅ E-library
  • ✅ Study by topic
  • ✅ And more.

Correct Answer

A

Explanation

To find the total current in a circuit with three 4Ω resistors connected in parallel with a potential difference of 16 V applied across them, you can use Ohm's law, which states:

I = V / R

Where:
I is the current (in amperes, A)
V is the potential difference or voltage (in volts, V)
R is the resistance (in ohms, Ω)

In this case, each of the three 4Ω resistors is connected in parallel, so the total resistance for the combination is calculated as follows:

1 / R_total = 1 / R1 + 1 / R2 + 1 / R3

1 / R_total = 1 / 4Ω + 1 / 4Ω + 1 / 4Ω
1 / R_total = 3 / 4Ω

Now, you can find the total resistance (R_total):

R_total = 4Ω / (3 / 4)
R_total = 16Ω / 3

Now that you have the total resistance (R_total), you can use Ohm's law to find the total current (I_total):

I_total = V / R_total
I_total = 16 V / (16Ω / 3)

To divide by a fraction, you can multiply by its reciprocal (the flipped fraction):

I_total = 16 V * (3 / 16Ω)
I_total = (48 V) / 16Ω
I_total = 3 A

So, the total current in the circuit is 3 amperes (A).

Frequently Asked Questions

Examkits is a JAMB CBT practice platform that provides over 20 years of past questions, Post UTME questions, and detailed video solutions to help students prepare for their exams.

You can practice JAMB past questions online, on Android, or on a desktop using the Examkits app. Just register on our website and choose your preferred device.

Yes. Our Android and Windows versions support offline usage. Once downloaded and activated, no internet is required to use most of the features.

Yes, Examkits provides detailed video explanations for all JAMB past questions from 2000 to 2024, helping students understand how to solve each problem.

Examkits offers free practice for some subjects. However, full access requires a one-time affordable activation fee for each version of the app.