A circuit has a voltage drop of 12 V across a 30 2 resistor that carries a current of 0.8 A. How much power is used by the resistor? Use P = VI.
A. 360 W
B. 12W
C. 9.6 W
D. 24 W

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?

Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?