Question

why is there a positive or negative charge on a coordinate bond​

Answer 1

Answer:

no friend you have a misconception (very sorry).

only negatively charged particles (electrons)can be shared equally from every atom of two or more atoms to make coordinate bond.

there is no place for positive charged particles .

but yes if you are saying about formal charge,then there is a example for you.

explanation: the formal charge of HCLis 0 as H is a positively charged (+1)atom and CL is a negatively charged(-1) atom so +1+(-1)=0

that's the reason for why some bonds have no charge.

if there was (+3) for a cataon(released 3 electrons)and a negatively charged anaon has (-2)charge(gained 2 electrons)then, (+3)+(-2)=+1,although the bond has positive charge.

it's all about gaining and releasing electrons

Answer 2

Answer:

Given :-

Current of the battery = 0.5 A

Voltage of the battery = 16 V

To Find :-

The e.m.f. and Internal resistance of battery.

Analysis :-

Here we are given with the current and voltage of the battery.

In order to find the resistance of the battery substitute the values given in the question using the formula of voltage.

Solution :-

We know that,

i = Current

v = Voltage

r = Resistance

Using the formula,

\underline{\boxed{\sf Voltage=Current \times Resistance}}

Voltage=Current×Resistance

Given that,

Voltage (v) = 16 V

Current (i) = 0.5 A

Substituting their values,

⇒ V = IR

⇒ 16 = 0.5 × R

⇒ R = V/I

⇒ R = 16/0.5

⇒ R = 32 Ω

Therefore, the resistance of the battery is 32 Ω.