Electrical Principles I
1.The combined resistance of two resistors of 20 ohms and 30 ohms connected in parallel is
a.600 ohms
b.50 ohms
c.25 ohms
d.12 ohms
2.The unit of electrical power is the
a.volt
b.watt
c.ampere
d.joule
3.A voltage divider circuit can be made possible by using a
a.variable capacitor
b.potentiometer
c.rheostat
d.diode
4.The heat dissipated from a resistor of 10 ohms carrying a current 25 amperes is
a. 6.25 kwatts
b. 6.50 kwatts
c. 6.75 kwatts
d. 7.25 kwatts
5.The insulator between the plates in the capacitor is also known as the
a.piezoelectric
b.medium
c.dielectric
d.region
6.Electrons move at the speed of light which is
a.300,000 metres
b.3,000,000 metres
c.30,000,000 meters
d.300,000,000 meters
7.The unit for capacitance is called the
a.farad
b.tesla
c.henry