A circular coil of cross-sectional area `200 cm^(2)` and 20 turns is rotated about the vertical diameter with angular speed of `50 rad//s` in a uniform magnetic of `3.0 xx 10^(-2) T`. Calculate the maximum value of current in the coil.

A circular coil of radius 8 cm and 20 turns is rotated about it vertical diamter with an angular speed of 50 rad/s in a uniform horizontal magnetic field of 3.0 xx 10^-2 T. Calculate the maximum and average value of emf induced in the coil.

(a) Draw a schematic diagram of an AC generator. Explain is working and obtain the expression for the instantaneous value of the emf in terms of the magnetic field B, number of turns N of the coil of area A rotating with angular frequency omega . Show how an alternating emf is generated by loop of wire rotating in a magnetic field. (b) A circular coil of radius 10 cm and 20 turns is rotated about its vertical diameter with angular speed of 50 rad s^(-1). in a uniform horizontal magnetic field of 3.0xx10^(-2)T . (i) Calculate the maximum and average emf induced in the coil. (ii) If the coil forms a closed loop of resistance 10 Omega , calculate the maximum current in the coil and the average power loss due to Joule heating.

(a) Draw a schematic diagram of an AC generator. Explain is working and obtain the expression for the instantaneous value of the emf in terms of the magnetic field B, number of turns N of the coil of area A rotating with angular frequency omega . Show how an alternating emf is generated by loop of wire rotating in a magnetic field. (b) A circular coil of radius 10 cm and 20 turns is rotated about its vertical diameter with angular speed of 50 rad s^(-1). in a uniform horizontal magnetic field of 3.0xx10^(-2)T . (i) Calculate the maximum and average emf induced in the coil. (ii) If the coil forms a closed loop of resistance 10 Omega , calculate the maximum current in the coil and the average power loss due to Joule heating.

A circular coil of radius 10cm and 25 turns is rotated about its vertical diameter with an angular speed of 40rads^(-1) , in a uniform horizontal magnetic field of magnitude 5xx10^(-2)T . Calculate the maximum emf induced in the coil. Also find the maximum current in the coil if the resistance of the coil is 15Omega .

A circular coil of radius 8.0 cm and 20 turns is rotated about its vertical diameter with an angular speed of 50 rad s^(-1) in a uniform horizontal magnetic field of magnitude 3.0 xx 10^(-2) T. Obtain the maximum and average emf induced in the coil. If the coil forms a closed loop of resistance 10 Omega , calculate the maximum value of current in the coil. Calculate the average power loss due to Joule heating. Where does this power come from ?