A resistor of `5 Omega` is connected in series with a parallel combination of a number of resistors each of `5 Omega`. If the total resistance of the combination is `6 Omega` , how many resistor are in parallel?

A 5Omega resistor is connected in series with a parallel combination of n resistors of 6Omega each. The equivalent resistance is 7Omega . Find n

If two resistors of 25 Omega and 15 Omega are joined together in series and then placed in parallel with a 40 Omega resistor, the effective resistance of the combination is:

The series combination of two batteries, both of the same emf 10 V, but different internal resistance of 10 Omega and 5 Omega is connected to the parallel combination of two resistors 30 Omega and R Omega . The voltage difference across the battery of internal resistance 10 Omega is zero, the value of R (in Omega ) is : _________.

Combine three resistors 5Omega, 4.5Omega and 3Omega is such a way that the total resistance of this combination maximum

The series combination of two batteries both of the same emf 10 V, but different internal resistance of 20 Omega and 5Omega is connected to the parallel combination of two resistors 30Omega and R Omega . The voltage difference across the battery of internal resistance 20 Omega is zero, the value of R(in Omega ) is __________.

A parallel combination of three resistors takes a current of 7.5 A from a 30 V supply. If the two resistors are 10 Omega and 12 Omega , find third one.

The series combination of two batteries, both of the same emf 20 V, but different internal resistance of 10Omega and 2 Omega , is connected to the parallel combination of two resistors 10 ohm and ROmega . The voltage difference across the battery of internal resistance 10 Omega is zero, the value of R (in Omega ) is _________.