Q

#### Pre-calculus 15 - Complex numbers 2.

(10 Questions)From these questions, you will know how to determine the conjugate of complex numbers

0

1

Multiplying a complex number by its complex conjugate will yield ------------

**A**

**B**

**C**

**D**

0

1

Every complex number (x+iy) has a complex conjugate (x-iy).

**A**

**B**

0

1

What is the complex conjugate of a+bi?

**A**

**B**

**C**

**D**

0

1

What is the complex conjugate of 5-7i?

**A**

**B**

**C**

**D**

0

1

how many complex conjugates does a single complex number have?

**A**

**B**

**C**

**D**

0

1

If the voltage in a circuit is (3+2i) amps and the current is (2-i) volts, what is the resistance?
Resistance= \frac{voltage}{cutrrent}

**A**

**B**

**C**

**D**

0

1

In order to divide 5+4i by negative 2+7i, you must multiply both the numerator and denominator by __________.
Answer it as a+bi.

0

1

In order to divide 5+ 3i by negative 3-5i, you must multiply both the numerator and denominator by ------------
Answer it as a+bi.

0

1

If the voltage in a circuit is 2+5i volts and the resistance is 1+3i ohms, what is the current?
I=\frac{V}{R}

**A**

**B**

**C**

**D**

0

1

If the current in a circuit is 3+2i amps and the resistance is 4-3i ohms, what is the voltage?
(voltage=R*I)

**A**

**B**

**C**

**D**

by Krishna