Dalam sebuah rumah terdapat 4 lampu masing-masingb20W dinyalakan 6 jam tiap hari, 4 lampu 40W dinyalakan 5 jam tiap hari, TV 100W dinyalakan 10 jam tiap hari dan setrika listrik 200W dinyalakan dua hari sekali selama 2 jam. Hitunglah: a. Energi listrik yang digunakan tiap hari b. Energi listrik yang digunakan 1 bulan (30 hari) c. Biaya yang harus dibayar dalam 1 bulan bila harga 1 kWh = Rp. 1000

<p>Yuks kita bahas........</p><p>a. <strong>Mencari Energi listrik yang digunakan stiap hari</strong></p><ul><li>Lampu = 4 x 20 x 6 = 480 Wh</li><li>Lampu = 4 x 40 x 5 = 800 Wh</li><li><u>TV &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 1 x 100 x 10 = 1.000 Wh </u>+</li></ul><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 2.280 wh</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 2,28 kWh</p><p>&nbsp;</p><p>b. <strong>Energi listrik yang digunakan 1 bulan (30 hari)</strong></p><p>&nbsp; &nbsp; &nbsp;Setrika listrik 200 W digunakan 2 hari sekali jadi sebulan&nbsp;</p><p>&nbsp; &nbsp; &nbsp; digunakan 15 hari</p><p>&nbsp; &nbsp; &nbsp;Setrika = 1 x 200 x 15 = 3.000 Wh = 3 kWh</p><p>&nbsp; &nbsp; &nbsp;Lampu + TV = 2,28 x 30 = 68,4 kWh</p><p>&nbsp; &nbsp; &nbsp;Energi dalam sebulan = 3 kWh + 68,4 kWh</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= <strong>71,4 kWh</strong></p><p>&nbsp;</p><p>c. <strong>Biaya dalam sebulan&nbsp;</strong></p><p>&nbsp; &nbsp; Biaya 1 bulan = 71,4 kWh x Rp.1.000</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= <strong>Rp. 71.400</strong></p><p>&nbsp; &nbsp; &nbsp;</p><p>&nbsp;</p>