possesses low internal resistance
can be recharges
has shorter life span
possesses high e.m.f
Correct answer is D
No explanation has been provided for this answer.
6.0 x 10-5C
1.2 x 10-4C
2.4 x 10-4C
4.8 x 10-4C
Correct answer is C
C = \(C_1 + C_2 = 2 + 2 = 4 \mu F\)
but Q = CV
= 4 x 10\(^{-6}\) x 120
= 4.8 x 10\(^{-4}\)
\(\therefore\) Each of the capacitor has a charge of \(\frac{4.8 \times 10^{-4}}{2}\)
= 2.4 x 10\(^{-4}\) C
When two like charges are brought together, the potential energy of the system formed will
increase because work is done against the field
increase because work is done by the field
decrease because work is done by the field
decrease because work is done against the field
Correct answer is A
if two like charges are close together, they repel each other. moving them closer together requires working against repulsive force which increases the potential energy of the system.
i and ii only
ii and iii only
iv only
i, ii and iv only
Correct answer is C
No explanation has been provided for this answer.
The sound heard by a person after the reflection of the sound generated by him is called
reverberation
resonance
echo
audibility
Correct answer is C
No explanation has been provided for this answer.