1
KCET 2022
MCQ (Single Correct Answer)
+1
-0

A galvanometer of resistance $$50 \Omega$$ is connected to a battery $$3 \mathrm{~V}$$ along with a resistance $$2950 \Omega$$ in series. A full scale deflection of 30 divisions is obtained in the galvanometer. In order to reduce this deflection to 20 divisions, the resistance in series should be

A
$$5550 \Omega$$
B
$$5050 \Omega$$
C
$$4450 \Omega$$
D
$$6050 \Omega$$
2
KCET 2022
MCQ (Single Correct Answer)
+1
-0

If voltage across a bulb rated $$220 \mathrm{~V}, 100 \mathrm{~W}$$ drops by $$2.5 \%$$ of its rated value, then the percentage of the rated value by which the power would decrease is

A
2.5%
B
5%
C
10%
D
20%
3
KCET 2021
MCQ (Single Correct Answer)
+1
-0

A wire of resistance $$3 \Omega$$ is stretched to twice its original length. The resistance of the new wire will be

A
$$1.5 \Omega$$
B
$$3 \Omega$$
C
$$6 \Omega$$
D
$$12 \Omega$$
4
KCET 2021
MCQ (Single Correct Answer)
+1
-0

In the given arrangement of experiment on meter bridge, if $$A D$$ corresponding to null deflection of the galvanometer is $$X$$, what would be its value if the radius of the wire $$A B$$ is doubled?

KCET 2021 Physics - Current Electricity Question 1 English

A
$$X$$
B
$$\frac{X}{4}$$
C
$$4 X$$
D
$$2 x$$
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