Electromagnetic Induction & Alternating Currents-Peak and RMS Value of AC [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 5 - 11 of 18
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Passage
Read the passage given below and answer the questions that follow:
If the voltage in an a c circuit is represented by the eq. , , then
Question 5 (1 of 2 Based on Passage)
Question 6 (2 of 2 Based on Passage)
Question 7
Question MCQ▾
If instantaneous current is given by amperes, then the r. m. s value of current is
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | 4 ampere | |
c. | zero ampere | |
d. |
Question 8
Question MCQ▾
A resistance of 20Ω is connected to a source of an alternating potential V = 220 sin (100πt) . The time taken by the current to change from its peak value to r. m. s value is,
Choices
Choice (4) | Response | |
---|---|---|
a. | 0.2 sec | |
b. | 2.5 × 10-3 sec | |
c. | 25 × 10-3 sec | |
d. | 0.25 sec |
Question 9
Question MCQ▾
In a circuit, the value of alternating current is measured by hot wire ammeter as 10 ampere. Its peak value will be
Choices
Choice (4) | Response | |
---|---|---|
a. | 7.07 A | |
b. | 14.14 A | |
c. | 10 A | |
d. | 20 A |
Question 10
Question MCQ▾
The peak value of an alternating e. m. f. E given by E = E0 cos t is 10 volts and its frequency is 50 Hz. At time , the instantaneous e. m. f. is
Choices
Choice (4) | Response | |
---|---|---|
a. | 10 V | |
b. | 5 V | |
c. | 1 V | |
d. |
Question 11
Question MCQ▾
An alternating current is given by the equation . The r. m. s. current is given by
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |