Question

Learning Task No. 4: Choose the letter of the best answer. Write your answer on a separate sheet of paper.
1. What happens to the current as the resistance increases?
A Current decreases as the resistance increases
B. Current increases as the resistance increases
C. Current decreases as the resistance decreases
D. Current increases as the resistance decreases

2. Which of the following formula CORRECTLY represents the relationship of current, voltage and resistance?
A. V=IR
B. I= V/R
C. V=I/R
D. R V/I

3. How much voltage would be necessary to generate 10 amps of current in a circuit that has 5 ohms of resistance?
A. 2 V
B. 0.5 V
C. 50 V
D. 4.9 V

4. How many amps of current flow through a circuit that includes 27-v battery and a bulb with a resistance of 3 ohms?
A. 9 Amp
B. 18 Amp
C. 81 Amp
D. 0.11 Amp

5. Three LED lamps are connected in parallel across a 220 volt source. If one lamp burns out,
A. the remaining two will not glow
B. the remaining two will glow brighter
C. the remaining two will glow dimmer
D. the remaining two will also burn out

6. Which connection below will make the bulbs glow brightest?
A. Two bulbs and one dry cell in a series connection
B. Two bulbs and one dry cell in a parallel connection
C. Two bulbs and two dry cells in a series connection
D. Two bulbs and two dry cells in parallel connection

7. Look at the illustration given. What type of circuit is shown?
A. Alternate C. Simple
B. Series D. Parallel

8. Which of the following is TRUE of electrical forces?
A. Electrical forces are produced by electrical charges.
B. Like charges attract, unlike charges repel.
C. Electrical forces are weaker than gravitational forces.
D. Positive and negative charges can combine to produce a third type of charge.​

Answer 1

Explanation:

1. (a)Current decreases as the resistance increases.

for example, are called electrical conductors and allow electricity to flow easily.

2.(b) i = v/r

reason:-The relationship between voltage, current, and resistance is described by Ohm's law. This equation, i = v/r, tells us that the current, i, flowing through a circuit is directly proportional to the voltage, v, and inversely proportional to the resistance, r.

3. (c) 50 V

Given,

I = 10 A

R= 5 ohms

Since, v =1R

So, v = 10*50=50 volts.

4. (a) 9 Amp

Given,

I = V/R

I = 27/3

I = 9 amp.

5. (b) the remaining two will glow brighter

Since, the lamps are connected in parallel circuit that means if one lamps burns out the other 2 will continue to light and in simple circuit it's just opposite means if one bulb is destroyed others will also be destroyed..

6. In parallel, both bulbs have the same voltage across them. The bulb with the lower resistance will conduct more current and therefore have a higher power dissipation and brightness. Most household electrical wiring bulbs are wired in parallel

7. (A) Alternate

8. (a) electric forces is produced due to electrical charge.

I hope you can be of help from my given answer.