Question Detail

PHY 102 Test Compilation PHY 102 26 Objective Question
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Question

A 200 V battery fully charges a capacitor of capacitance C. It is then discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity 2.5x102 J/(kg.K) and mass 0.1 kg. If the temperature of the block rises by 0.4 K, what is the value of C?
Options
A 1.0 x 10-4 F
B 1.0 x 10-5 F
C 2.5 x 10-4 F
D 5.0 x 10-4 F
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Qheat=mc(dT)=10J. C=2U/V2=2(10)/40000=5.0x10-4 F.

Hint

Qheat=mc(dT)=10J.

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 26
Type: Objective
Difficulty: Not specified
Question 1529 of 1819
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