6.4 Cost of Electricity

The unit for Electrical Power is

• hour

• ampere

• watt

• Volt

The S.I unit for Electrical Energy is

• kwh

• KWj

• kWh

• KWJ

Electrical Energy is affected by

• speed

• voltage

• current

• Power

What is the cost of the first 200 block of TNB tariff

• RM 436.

• RM 0.22

• RM 2.18

• RM 43.60

This is Lavinder's TV. What is the power rating of this TV?

• Toshiba

• 1000 W

• SMART TV 40

• RM 899.

At night, Lavinder watch the TV till midnight every weekend. Hong long does she spend her time watching TV for a week?

• 12 hour

• 6 hours

• 3 hours

• 1 hours

How much does Lavinder has to pay in a month for watching TV during the weekend?

• RM 1.04

• RM 2.62

• RM 0.26

• RM 10.46

Afiqah uses her laptop everyday in her office from morning till lunch hour. Hong long does she use the laptop in a day?

• 4 hours

• 6 hours

• 8 hours

• 10 hours

How much does the electricity consumption need to be paid per month for Afiqah's laptop?

• RM 5.80

• RM 5.75

• RM 0.58

• RM 0.57

The variables that I need to know when calculating the cost of electricity are