Class 12

20. Current Electricity question bank (Physics)

Practice 4,124 free Class 12 Physics - 20. Current Electricity questions with answers and step-by-step solutions.

Start free Book a demo
All Easy Hard Medium
Q1.

When a uniform solid sphere and a disc of the same mass and of the same radius roll down an inclined smooth plane from rest to the same distance, then the ratio of the time taken by them is  

(A)
15 : 14
(B)
\(15^2 : 14^2\)
(C)
\(\sqrt{14} : \sqrt{15}\)
(D)
14 : 15
Show answer & solution
Verified Answer & Solution Locked
Sign in to your free student account to reveal verified answers, instant hints, and detailed explanations.
Sign in to view
Q2.

Two gases of equal mass are in thermal equilibrium. If \(P_a, V_a\) and \(P_b, V_b\) are their respective pressures and volumes, then which relation is true?

(A)
\(P_a \ne P_b,\ V_a = V_b\)
(B)
\(P_a = P_b,\ V_a \ne V_b\)
(C)
\(\frac{P_a}{V_a} = \frac{P_b}{V_b}\)
(D)
\(P_a V_a = P_b V_b\)
Show answer & solution
Verified Answer & Solution Locked
Sign in to your free student account to reveal verified answers, instant hints, and detailed explanations.
Sign in to view
Protected Questions

Unlock All 1410 Questions in 20. Current Electricity

Log in or sign up free to access every question with complete solutions, create chapter practice tests, and track your performance.

Sign in to unlock Create free account

Sign up free to access all 1,410 questions

Unlock every 20. Current Electricity question, generate papers, and practice at your own pace.

Start free