This PowerPoint helps students to consider the concept of infinity.
soal latihan
1. A light bulb is connected to a potential difference of 12 volt. It draws a current 4 A. If the lamp has absorbed 14.400
joules of energy, then it has been turning on for …..
a. 5 minutes b. 4 minutes c. 3 minutes d. 2 minutes
An electric heater has a voltage of 220 V and a power of 200 W. If the electric heater is connected to the electric
source of 110 V. The electric power used by the electric heater is ....
A. 800 J/s
B. 400 J/s
C. 100 J/s
D. 50 J/s
A student uses his laptop 5 hours a day. The laptop is connected with 220 volts voltage and it produces electric
current flow of 0.5 amperes. If the electricity bill from PLN is Rp 500/kWh, what will the electricity bill be for the
use of the laptop in one month (30 days)?
A. Rp 3,300.00.
B. Rp 5,400.00.
C. Rp 8,250.00.
D. Rp 9,800.00.
