Acurrent of 60 ma passes through a loudspeaker of resistance 6 ω. what is the potential difference across the resistance of the loudspeaker?

The Potential difference across the loudspeaker = 0.36 v

Explanation:

Potential Difference: The potential difference between any two points in a circuit is defined as the work done, in Joules when one coulomb of electricity moves from one point to another,

From Ohms law,

V = IR Equation 1

Where V = potential difference between across the resistance of the loudspeaker., I = current pass through the loudspeaker, R = Resistance of the loudspeaker.

Given: I = 60 mA = 60 × 10⁻³ A, R = 6 Ω

Substituting these values into equation 1

V = 60 × 10⁻³ × 6

V = 360 × 10⁻³ V

V = 0.36 v

Therefore the Potential difference across the loudspeaker = 0.36 v

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: