What is the internal resistance of a 4.7 V battery that produces power of 92 W when shorted with wire of negligble resistance?

A hollow copper wire with an inner diameter of 1.8 mm and an outer diameter of 3.2 mm carries a current of 13 A. What is the current density in the wire?

A hollow copper wire with an inner diameter of 1.7 mm and an outer diameter of 3.6 mm carries a current of 14 A. What is the current density in the wire?

Two 8.3×8.3 cm metal plates are separated by a 0.66 mm thick dielectric material with a dielectric constant of 7.9. What is the capacitance?

What is the current labled with a “?” if 8, 5, 8 and 1?

A long, straight wire carries a current of I = 2.4 A to the left as shown below. What is the magnitude of the magnetic field created by this wire at point P which is 14 cm away from the wire as shown?

Spherocytes are seen in:

What is the current labled with a “?” if 8, 8, 7 and 2?

What is the power dissipated by the resistor if 4.0

What is the internal resistance of a 5.6 V battery that produces power of 34 W when shorted with wire of negligble resistance?