Electrical Computation

A part of an electric circuit which converts electrical energy into another form of energy to do work is ________.

• control

• source

• circuit

• load

A part of an electrical circuit, consists of batteries, generator or a main electrical power which supplies electricity is called ________.

• control

• source

• circuit

• load

The resistors are to be connected in four possible types of circuit connections namely series, parallel, series-parallel and parallel-series. Which type of connection will give the least amount of equivalent resistance?

• Parallel-series

• Series-parallel

• Series

• Parallel

What is the reason why electrical appliances are connected in parallel rather than in series?

• Parallel connection consumes lesser power.

• Parallel connection is simpler than series connection.

• Each appliances consumes more power if connected in series.

• It makes the operation of each appliance independent of each other.

A law that states that current is directly proportional to voltage and inversely proportional to resistance is known as ________.

• Ohm's Law

• Kirchoff's Law

• Law of Resistivity

• PEC

In Ohm's Law, to find the unknown voltage in the circuit, the formula to be used is:

• E = I / R

• E = I x R

• I = E / R

• R = E / I

What amount of current does a 40-watt fluorescent lamp draw from a 220 volts power source?

• 5.5 amperes

• 0.18 amperes

• 25.5 amperes

• 50.5 amperes

What is the voltage required by an automatic pressure cooker having a resistance of 20 ohms when the current flowing is 8 amperes?

• 120 volts

• 240 volts

• 160 volts

• 480 volts

In a 220-volt power line, three 50-watt incandescent bulbs are connected in parallel. How many more bulbs will light if one of the bulbs is open?

• One

• Two

• All

• None

A series connected dry cells will result to ________.

• increase in the amount of current

• increase in the amount of voltage

• increase total resistance

• more powerful supply of electricity