The charge flowing through a resistance R varies with time t as Q=at-bt²,
The charge flowing through a resistance R varies with time t as Q=at-bt², where a and b are positive constants.…
7 years ago
Current Electricity
A potentiometer wire is 100cm long and a constant potential difference is maintained
A potentiometer wire is 100cm long and a constant potential difference is maintained across it. Two cells are connected in…
7 years ago
An electric motor operating on a 60 volt D.C supply draws a current of 10 amp.
An electric motor operating on a 60 volt D.C supply draws a current of 10 amp. If the efficiency of…
7 years ago
A current of 2A flows through a 2Ω resistor when connected across a battery
A current of 2A flows through a 2Ω resistor when connected across a battery. The same battery supplies a current…
7 years ago
A galvanometer having resistance of 50 Ω requires a current of 100μA to give full
A galvanometer having resistance of 50 Ω requires a current of 100μA to give full scale deflection. How much resistance…
7 years ago
A battery of emf 10 V and internal resistance 3 ohm is connected to a resistor.
A battery of emf 10 V and internal resistance 3 ohm is connected to a resistor. The current in the…
7 years ago
A battery of e.m.f. E and internal resistance r is connected to an external resistance
A battery of e.m.f. E and internal resistance r is connected to an external resistance R the condition for maximum…
7 years ago
A galvanometer having internal resistance 10Ω requires 0.01 A for a full scale
A galvanometer having internal resistance 10Ω requires 0.01 A for a full scale deflection. To convert this galvanometer to a…
7 years ago
A galvanometer acting as a voltmeter will have
A galvanometer acting as a voltmeter will have Options (a) A high resistance in parallel with its coil (b) A…
7 years ago
A battery having e.m.f. 4 volt and internal resistance 0.5 Ω is connected
A battery having e.m.f. 4 volt and internal resistance 0.5 Ω is connected with a resistance of 4.5 Ω, then…
7 years ago