Homework Help: Physics

Posted by Joan on Sunday, March 13, 2011 at 2:31pm.

An electrical motor is designed to operate on 34 V at 1.3 A. How much resistance must be connected in series to this motor, if you wish to plug it in to a 120 V outlet?

Physics - bobpursley, Sunday, March 13, 2011 at 3:37pm
Is it DC or AC? I assume DC, because if AC, power factor is troublsome adding a resistance in series.

you want 1.3 a? so the voltage across the resistor has to be (120-34), and current 1.3, or a resistance of 86/1.3 ohms.

Answer this Question

Related Questions

physics - The electrical motor runs on a D.C source of emf E and internal ...
Physics - The resistance of the wire in the windings of an electric starter ...
Physics - A 120.0 volt motor draws a current of 7.60 A when running at normal ...
science - Sasha wants to find the resistance of the motor. She measured a 6 V ...
algebra - The power (P) required to run a motor is equal to the voltage (E) ...
physics - A 120-V motor has mechanical power output of 3.20 hp. It is 81.0% ...
electrical trade theory - what r the 2 main characteristics of a shunt connected...
Physics - A diagram represents a simplified sketch of an electric DC motor.which...
Physics - A dc electric motor found in the lab was being examined by a student. ...
Physics - A 120-V motor has mechanical power output of 2.00 hp. It is 82.0% ...

For Further Reading

First Name:
School Subject:
Answer: