CUET · PHYSICS · PYQ PAPER 2023
Choose the correct statements from following:
A. Resistivity of a conductor increases with increase in its length.
B. When a small resistor is connected in parallel across a galvanometer, it is converted into ammeter.
C. Current density is a vector quantity.
D. Potentiometer is used to measure the electric current.
E. Kirchoff's junction rule is based on the conservation of charge.
Choose the correct answer from the options given below:
- A A & E only
- B B, C & E only
- C D & E only
- D A, B & C only
Answer & Solution
Correct Answer
(B) B, C & E only
Step-by-step Solution
Detailed explanation
(B) Correct: A galvanometer is converted into an ammeter by connecting a low resistance (called a shunt) in parallel to it. (C) Correct: Current density J is a vector quantity defined as the current flowing per unit area normal to the direction of flow. (E) Correct: Kirchhoff’s…
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