Wednesday

July 23, 2014

July 23, 2014

Posted by **Anonymous** on Monday, October 8, 2012 at 9:45pm.

is connected by a long wire to a resistor R = 8.0 ohms. The

wire goes around a solenoid. The

solenoid has 4000 turns per meter and area 25 cm^2.

a) If the current in the solenoid is I = 200 Amps and is

constant, then what is the current through the 8 ohm resistor?

b) If the current in the solenoid is I(t) = 200 cos(120(pi)t),

then what is the maximum current through the 8 n resis

tor?

c) Is the battery ever being charged when the current in

the solenoid is I(t) = 200cos(120(pi)t)?

**Related Questions**

Phyics - A resistor has a resistance R, and a battery has an internal resistance...

physics - a battery with and emf of 12V and an internal resistance of 0.5 ohms, ...

Physics - Batteries are not perfect. Instead they have an "internal resistance, ...

Physics - Batteries are not perfect. Instead they have an "internal resistance, ...

physics - A 15.0 Ohms resistor is connected in series to a 120V generator and ...

Physics - A battery of three cells in series each of emf 2v and internal 0.5 ...

physics - A resistor of resistance R is connected to a power supply of constant ...

Physics - A 2.0-ohm resistor is connected in series with a 20.0-V battery and a ...

physics - if 3 resistors of 2,3 and 5 ohms are connected in parallel and a ...

physics - A new "D" battery has an emf of 1.5 V. When a wire of negligible ...