A long cylindrical conductor with radius R = 1.0 cm carries a current I = 40 A. The current is uniformly distributed over the cross-sectional area of the conductor. Find the magnitude of magnetic fields at r = 2.0 cm. (r is measured from the center of the cylinder)

Three identical light bulbs are connected to a source of emf as shown. Which bulb is brightest?

A long cylindrical conductor with radius R = 1.0 cm carries a current I = 40 A. The current is uniformly distributed over the cross-sectional area of the conductor. Find the magnitude of magnetic fields at r = 2.0 cm. (r is measured from the center of the cylinder)

See figure below. The wire and magnetic field are on the same plane. The direction of the magnetic force is:

The 20.0 cm x 35.0 cm rectangular circuit shown is hinged along side ab. It carries a clockwise 5.00-A current and is located in a uniform 1.20-T magnetic field oriented perpendicular to two of its sides. What is the torque that magnetic field exerts on the circuit about the hinge axis ab?

An emf source with emf = 120 V, a resistor with R = 80.0 W, and a capacitor with C = 4.00 mF are connected in series to charge the capacitor. When the current in the resistor is 0.900 A, what is the charge on the capacitor?

For an ideal ammeter and an ideal voltmeter

A -4.80-mC charge is moving at a constant speed of 6.80´105 m/s in the +x-direction relative to a reference frame. At the instant when the point charge is at the origin, what is the magnetic field vector it produces at the point x = 0, y = 0.500 m, z = 0?

Three identical light bulbs are connected to a source of emf as shown. Which bulb is brightest?

A -4.80-mC charge is moving at a constant speed of 6.80´105 m/s in the +x-direction relative to a reference frame. At the instant when the point charge is at the origin, what is the magnetic field vector it produces at the point x = 0, y = 0.500 m, z = 0?