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CBSE

Subject

Physics

NEET Physics : Current Electricity

Multiple Choice Questions

141.

Two bulbs A and B are connected in parallel. Bulb A will glow more than bulb B. If their resistances are R_A and R_B respectively. Then :

R_{A $<$}R_B
R_A_$=$R_B
R_A_$>$R_B
none of these

142.

The potential difference between points A and B is:

20/7 V
40/7 V
10/7 V
zero

143.

A thermoelectric refrigerator works on

Joule effect
Seebeck effect
Peltier's effect
Thermionic effect

144.

At an instant a positive charge is moving parallel to a current carrying conductor. The path of the positive charge is

elliptical
circle
straight line
parabola

145.

A current of 2 amperes flowing through a conductor produces 80 joules of heat in ten seconds. The resistance of the conductor is:

0.5 Ω
2 Ω
4 Ω
20 Ω

146.

A battery of 12 volt is charged by a supply of 100 volt as shown in the figure. The charging current is 1.0A. Calculate the value of R

45 $Ω$
105 $Ω$
88 $Ω$
95 $Ω$

147.

A short linear object of length b lies along the axis of a concave mirror of focal length f at a distance u from the pole of the mirror, what is the size of the image?

$(\frac{f}{u - f}) b$
${(\frac{f}{u - f})}^{2} b$
$(\frac{f}{u - f}) b^{2}$
$(\frac{f}{u - f})$

148.

If a current is flowing in a spring, then it:

compress
swing
expand
remain unaffected

149.

A resistance of 8 ohm and an inductance of 6 ohm are connected in series to an A.C circuit. The impedence of the circuit is

14 $\sqrt{2} Ω$
10 $Ω$
2 $Ω$
15 $Ω$

150.

Find the equivalent resistance between the points A and B :

2 Ω
4 Ω
8 Ω
16 Ω

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