Question

An electric geyser rated 500 W operates
one hour/day. If the cost of unit is * 3.00, find
the cost of energy to operate it for the month of
August
​

Answer 1

Given

• Power = 500 W
• Time = 1 Hour/day
• Cost = ₹3 per unit

To Find

• Current Bill for the month of August

Solution

● E = P × t

✭ Electrical Energy consumed/day :

→ E = P × t

• Power = 500 W = 500/1000 = 0.5 kW
• Time = 1 hour

→ E = 0.5 × 1

→ E = 0.5 kWh

✭ Electrical Energy Consumed/August :

• The month of August has 31 days

→ Eₙₑₜ = 0.5 × 31

→ Eₙₑₜ = 15.5 kWh

━━━━━━━━━━━━━━━━━━

✭ Current Bill :

→ Current Bill = Cost per unit × Energy Consumed

→ Current Bill = 3 × 15.5

→ Current Bill = ₹46.5

Answer 2

Answer:

Given :-

• Cost per unit = ₹3.00
• Power = 500 W
• Time = 1 hour per day

To Find :-

Electricity bill

Solution :-

Firstly lets find total energy consumed per day

E = P × T

Power = 500/1000 = 0.5 W

$\sf \: energy \: consumed = 0.5 \times 1$

$\sf \: energy \: consumed \: = 0.5 \: kWh$

Now,

Let's find total cost of 31 days

$\sf \: total \: cost = 0.5 \times 31$

$\sf \: total \: cost = 15.5 kWh$

Now,

Let's find total bill

$\sf \: total \: \: bill \: = 15.5 \times 31$

$\sf \: total \: \: bill \: =₹46.5$