Kale was discoverd just 2 years ago ........
Answer:
A) Parentheses
Explanation:
Conditional statements control behavior in JavaScript and determine whether or not pieces of code can run.
There are multiple different types of conditionals in JavaScript including:
If” statements: where if a condition is true it is used to specify execution for a block of code.
“Else” statements: where if the same condition is false it specifies the execution for a block of code.
“Else if” statements: this specifies a new test if the first condition is false.
Now that you have the basic JavaScript conditional statement definitions, let’s show you examples of each.
If Statement Example
As the most common type of conditional, the if statement only runs if the condition enclosed in parentheses () is truthy.
EXAMPLE
if (10 > 5) {
var outcome = "if block";
}
outcome;
OUTPUT
"if block"
Here’s what’s happening in the example above:
The keyword if tells JavaScript to start the conditional statement.
(10 > 5) is the condition to test, which in this case is true — 10 is greater than 5.
The part contained inside curly braces {} is the block of code to run.
Because the condition passes, the variable outcome is assigned the value "if block".
Answer:
C. 14.4 kwhr.
Explanation:
To calculate the energy used by appliance first calculate the power. The formulae for calculating power(<em>P</em>) is 
, where V stands for voltage and I stands for current.
In the given problem, V = 240 volts and I = 15 amp. Therefore,
Now, formulae for calculating energy used i.e. work(W) is 
, where <em>t</em> is the time.
In the given question time is 4 hr. Therefore energy used will be,
Energy used (W) = 
.
