# Category: Physics Solutions

Physics Solutions

#### A semicircular copper rod of radius R rotates about an axis passing through one of its ends and lying in the plane of the rod …

Q: A semicircular copper rod of radius R rotates about an axis passing through one of its ends and lying…

#### The figure shows a wire sliding on two parallel, conducting rails placed at a separation l . A magnetic field B exists ….

Q: The figure shows a wire sliding on two parallel, conducting rails placed at a separation l . A magnetic…

#### An average emf of 20 V is induced in an inductor when the current in it is changed from 2.5 A in one direction …

Q: An average emf of 20 V is induced in an inductor when the current in it is changed from…

#### An inductor-coil carries a steady-state current of 2.0 A when connected across an ideal battery of emf 4.0 V….

Q: An inductor-coil carries a steady-state current of 2.0 A when connected across an ideal battery of emf 4.0 V.…

#### An inductor-coil of inductance 20 mH having resistance 10 ohm is joined to an ideal battery of emf 5.0 V….

Q: An inductor-coil of inductance 20 mH having resistance 10 ohm is joined to an ideal battery of emf 5.0…

#### A coil of inductance 8.4 × 10-3 and a resistance of 6 ohm are connected to a 12 V battery as shown in the figure….

Q: A coil of inductance 8.4 × 10-3 H and a resistance of 6 ohm are connected to a 12…

#### A circular ring of diameter 20 cm has a resistance of 0.01 ohm . How much charge will flow through the ring

Q: A circular ring of diameter 20 cm has a resistance of 0.01 Ω . How much charge will flow…

#### It is desired to set up an undriven L – C circuit in which the capacitor is originally charged to potential difference of 100.0 V.

Q: It is desired to set up an undriven L – C circuit in which the capacitor is originally charged…

#### An inductor coil stores 32 J of magnetic energy and dissipates energy as heat at the rate of 320 W when a current of 4 A is passed …

Q: An inductor coil stores 32 J of magnetic energy and dissipates energy as heat at the rate of 320…

#### A magnet of magnetic moment M and length 2l is bent at its mid-point such that the angle of bending is 60°…..

Q. A magnet of magnetic moment M and length 2l is bent at its mid-point such that the angle of…

#### Why does earth behaves like a magnet ?

Question: Why does earth behaves like a magnet ? Ans: According to scientists, the earth’s magnetic field originates from the outer core…

#### There are three forces F1 , F2 , F3 acting on a body, all acting on a point on the body. The body is found to move with uniform speed…

Q: There are three forces F1 , F2 , F3 acting on a body, all acting on a point on…