1
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
Which of the diagrams correctly represents the electric field between two charged plates if a neutral conductor is placed in between the plates?
A
B
C
D
2
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
A variable capacitor is connected to a 200 V battery. If its capacitance is changed from 2 $$\mu$$F to X $$\mu$$F, the decrease in energy of the capacitor is 2 $$\times$$ 10$$-$$2 J. The value of X is -
A
1 $$\mu$$F
B
2 $$\mu$$F
C
3 $$\mu$$F
D
4 $$\mu$$F
3
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
A potential difference of 200 V is maintained across a conductor of resistance 100 $$\Omega$$. The number of electrons passing through it in 1s is
A
1.25 $$\times$$ 1019
B
2.5 $$\times$$ 1018
C
1.25 $$\times$$ 1018
D
2.5$$\times$$ 1016
4
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
The impedance of a series LCR circuit is -
A
$$R + {X_L} + {X_C}$$
B
$$\sqrt {{1 \over {X_C^2}} + {1 \over {X_L^2}} + {R^2}} $$
C
$$\sqrt {X_L^2 - X_C^2 + {R^2}} $$
D
$$\sqrt {{R^2} + {{({X_L} - {X_C})}^2}} $$
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