Two idential cycle wheels (geomettrically have different number of spokes connected from centre to rim. One if having `20` spokes and the other having only `10` (the rim and the spokes are resistanceless). One resistance of value `R` is connected between centre and rim. The current in `R` wil be

Two identical cycle wheels (geometrically have different number of spokes connected from center to rim. One if having 20 spokes and the other having only 10 (the rim and the spokes are resistance less). One resistance of value R is connected between centre and rim. The current in R will be

A coil having an inductance of 1//pi henry is connected in series with a resistance of 300 Omega . If 20 volt from a 200 cycle source are impressed across the combination, the value of the phase angle between the voltage and the current is :

A coil having an inductance of 1//pi henry is connected in series with a resistance of 300 Omega . If 20 volt from a 200 cycle source are impressed across the combination, the value of the phase angle between the voltage and the current is :

A coil having an inductance of 1/pi henry is connected in series with a resistance of 300Ω. if 20 volt from a 200 cycle source are impressed across the combination, the value of the phase angle between the voltage and the current is :

Assertion (A): Two resistance having value R each. Their equivalent resistance is R/2 . Reason (R): Given Resistance are connected in parallel.

A conducting wire of uniform cross section, having resistance R is bent to form a circle. O is the centre of this circle. Two points P and Q are selected on the ring in such a manner that anglePOQ is theta . If a battery of emf E and negligible internal resistance is connected between P and Q, then the current drawn from the battery would be

A rod of length l and resistance r rotates about one end as shown in figure.Its othr end touches a conducting ring a of negligible resistance. A resistance R is connected between centre and periphery.Draw the electrical equivalence and find the current in the resistance R .There is a uniform magnetic field B directed as shown.