2.0\(\Omega\).
3.0\(\Omega\).
5.0\(\Omega\).
6.0\(\Omega\).
Correct answer is A
\(\frac{V}{R} = \frac{E}{R + r}\)
\(\frac{0.9}{3} = \frac{1.5}{3 + r}\)
r = 2\(\Omega\).
effective resistance of the circuit is halved
total power dissipated is doubled
total current in the circuit is halved
terminal voltage is halved
Correct answer is B
No explanation has been provided for this answer.
\(\frac{Q}{4 \pi E_o E_r}\)
\(\frac{Q}{4 \pi E_o E_r (R +r)}\)
\(\frac{Q}{4 \pi E_o E_r(R - r)}\)
\(\frac{Q}{4 \pi E_o E_rR}\)
Correct answer is D
No explanation has been provided for this answer.
electric charges evaporate from the surface of the conductor
charges are connected to earth
charges on the conductor are neutralized by opposite charges from the surrounding air
charges ionize the surrounding air
Correct answer is C
No explanation has been provided for this answer.
A satellite in circular motion around the earth does not have
a gravitational force acting on it
a uniform velocity
an acceleration
a centripetal force acting on it
Correct answer is B
No explanation has been provided for this answer.