(A) South Africa
(B) Uganda
(C) West Africa
(D) North America
Lionel Messi left Barcelona Football Club after?
(A) 18 Years
(B) 19 Years
(C) 21 Years
(D) 23 Years
Product of charge and potential difference is?
(A) Energy
(B) Power
(C) Flux
(D) Current
Potential difference between the head and tail of an electric eel is?
(A) 600 Volts
(B) 700 Volts
(C) 800 Volts
(D) 900 Volts
If a resistor is transversed in the opposite direction of current then the change in potential is?
(A) Positive
(B) Negative
(C) Constant
(D) Zero
If a resistor of resistance R is connected across a battery of internal resistance ‘r’ then output power will be maximum when?
(A) R=1/4 r
(B) R=r
(C) R=2r
(D) R=4r
A rheostat can be used as?
(A) Rectifier
(B) Amplifier
(C) Oscillator
(D) Potential Divider
Numerical value of black colour in carbon resistors is?
(A) 0
(B) 1
(C) 2
(D) 3