Question

The magnetic field inside a solenoid is given by B = (??NI) / l. The induced e. m. f. is given by ? = -N(??? / ?t), where ??? = (?B)A. The coil has 23 loops, l = 6.0 cm, A = 0.35 m² and the solenoid has only air inside its core. a) Find the magnetic field when the current is 5mA. b) For an induced e. m. f. of 2.0x10?¹V to occur in 0.30s what must be the value of ???? c) Find the energy density stored in the B field per unit volume u = (1/2) (B² / ??) when the magnetic field has the value in part a).

          The magnetic field inside a solenoid is given by B = (??NI) / l. The induced e. m. f. is given by ? = -N(??? / ?t), where ??? = (?B)A. The coil has 23 loops, l = 6.0 cm, A = 0.35 m² and the solenoid has only air inside its core.

a) Find the magnetic field when the current is 5mA.

b) For an induced e. m. f. of 2.0x10?¹V to occur in 0.30s what must be the value of ????

c) Find the energy density stored in the B field per unit volume u = (1/2) (B² / ??) when the magnetic field has the value in part a).

The magnetic field inside a solenoid is given by B = (??NI) / l. The induced e. m. f. is given by ? = -N(??? / ?t), where ??? = (?B)A. The coil has 23 loops, l = 6.0 cm, A = 0.35 m² and the solenoid has only air inside its core.

a) Find the magnetic field when the current is 5mA.

b) For an induced e. m. f. of 2.0x10?¹V to occur in 0.30s what must be the value of ????

c) Find the energy density stored in the B field per unit volume u = (1/2) (B² / ??) when the magnetic field has the value in part a).

Added by Juan A.

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