Question

1: During an electronics experiment in your laboratory, you measure the voltage at terminal A
on your newly designed circuit. You measure -12 volts. You check the same terminal after
making a small change to the circuit and this time you measure -18 volts. What was the voltage
difference between the two readings?

2: What is the change in temperature a customer in a grocery store experience when they walk from the chilled vegetable section at 4 c to the frozen fish section which is set to -18 c?

Answer 1

Answer:

1) - 6 volts (or 6 volts drop)

2) -22°C  (or 22°C  drop)

Step-by-step explanation:

1. ............................

Initial voltage = -12 volts

Later voltage = - 18 volts

The difference:

• -18 - (-12) = -18 + 12 = - 6 volts

2. ............................

Temperature in the chilled vegetable section = 4°C  

Temperature in the frozen fish section = - 18°C  

The difference:

• -18°C - 4°C  = -22°C