Question Detail

PHY 102 Test Compilation PHY 102 4 Objective Question

Question

battery of emf 4v and internal resistance of 2 Ohms is joined to a resistor of 8 Ohms. Calculate the terminal p.d
Options
A 3.2v
Correct Answer
B 4.8v
C 24v
D 4.8v
Correct Answer

Option A is the correct answer.

Detailed Explanation

Current I = E/(R+r) = 4/(8+2) = 0.4 A. Terminal V = E - Ir = 4 - (0.4×2) = 4 - 0.8 = 3.2 V.

Hint

V = E - Ir.

Question Info