Question

Q5) Read each set of terms and
identify the odd set*
O Cow, milk, butter
O Hen, meat, egg
O Goat, milk, heat
O Plant, vegetable, butter milk​

Answer 1

Answer:

Explanation:

The electric power required to operate a device is the input voltage times the current required.

P = VI

where

P = electric power

V = voltage used

I = current in amperes

VI is V times I

Electric power is measured in watts. The electrical energy used is the electric power times the time. That is, E = Pt. If we measure the electric power as kilowatts and the time as hours, we get the energy used by an electrical system in terms of kilowatt-hours. That is the unit of measurement the electric company uses when determining our bill.

In this case, th electric iron of resistance 88 is used at 220 volt for 2 hours.

The power P = VI, substituitng I=V/R we get, P=

R

V

2

=

88

220

2

=550W=0.55kW.

Therefore, energy spent = E = Pt = 0.55kW×2hrs=1.1units.

Hence, the energy spent is 1.1 units.

Answer 2

We obtain vegetable from plants, whereas buttermilk from cows or buffaloes.

We get butter from milk and milk from cows.

A Hen is edible for carnivores and it gives us an egg.

Goat is also eaten by carnivores and it also gives us milk.